Siemens SINUMERIK 840D sl Programming Manual page 871

If, following a GET request without preprocessing stop, the axis is enabled again with
RELEASE(axis) or WAITP(axis), a subsequent GET will induce a GET with preprocessing
stop.
Axis assignment changed
An axis or spindle accepted with GET remains assigned to this channel even after a key or
program RESET.
When a program is restarted the replaced axes or spindles must be reassigned in the program
if the axis is required in its original channel.
It is assigned to the channel defined in the machine data on POWER ON.
Examples
Example 1: Axis exchange between two channels
Of the six axes, the following are used for machining in channel 1: 1st, 2nd, 3rd and 4th axis.
5th and 6th axis is used in channel 2 for the workpiece change.
Axis 2 should be exchanged between two channels and after POWER ON can be assigned to
channel 1.
Program "MAIN" in channel 1:
Program code
INIT (2,"TRANSFER2")
N... START (2)
N... GET (AX2)
...
N... RELEASE (AX2)
N... WAITM (1,1,2)
...
N... M30
Program "TRANSFER2" in channel 2:
Programming
N... RELEASE (AX2)
N160 WAITM(1,1,2)
N150 GET(AX2)
...
N... M30
NC programming
Programming Manual, 12/2019, 6FC5398-2EP40-0BA0
CAUTION
Comment
; Select program TRANSFER2 in channel 2.
; Start the program in channel 2.
; Accept axis AX2.
; Release axis AX2.
; Wait for WAIT marker in channel 1 and 2 for synchro-
nizing in both channels.
; Rest of program after axis replacement.
Comment
; Wait for WAIT marker in channel 1 and 2 for synchro-
nizing in both channels.
; Accept axis AX2.
; Rest of program after axis replacement.
Work preparation
3.15 Axis functions
871